Originally Posted by moshin29
Do let us know how it pairs with the O2. Cheers
hey dude, i got my dt990's come through 3 days ago so thought id send you a quick reply. I'm not an Audiophile so i cant go into as much detail as you probably could, but i can say im extremly happy with how they match up with the o2 amp for now. I'm blown away at how much better they sound than my senn's 598, its making me want to wear them all day listening to my fav music and also game for hours as everything sounds awesome now. The o2 amp,when connected to my iphone, powers them just enough so that it gets to the point where i would never want them any louder, it doesn't get to the point of blowing my ears off but i think its just enough that I'm happy with it. but when i get them connected to my computer with a titanium HD sound card+O2 they can literally blow my ears off with awesomeness, but again i dont need to and will probably never will go so loud. as for the sound, all i can say is that I'm extremely happy with the sound. action movies will blow you away. playing battlefield 4 will put you in the battle... thats the best way i can describe it. Please if anyone reads this do not make the mistake of getting the Sennheiser hd598 , trust me they are too laid back. there is lots of detail, a tad more then the dt990, but you will also fall asleep listening to them. if you are using them to listen to audio books before you go to sleep then go ahead and get the 598's.